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Doctor blade for the paper industry

A paper industry, scraper technology, applied in the direction of scraper, papermaking, paper machine, etc., can solve the problem of scraper vibration, interference scraper performance, etc.

Inactive Publication Date: 2011-08-31
何塞华金・阿莫纳里兹阿斯科雷恩 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Over time, the need for industrial profitability required a significant increase in the rotational speed of the paper transfer rollers, but this increase in speed severely interfered with the performance of the doctor blades
[0003] The applicant has investigated the disturbance mentioned above and found that the reason for it is that the doctor blade itself vibrates as the speed of the paper transfer roller increases

Method used

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  • Doctor blade for the paper industry
  • Doctor blade for the paper industry
  • Doctor blade for the paper industry

Examples

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Embodiment Construction

[0025] Practical non-limiting examples of the invention are described below.

[0026] According to the present invention and as Figure 1a with Figure 1b As shown, the doctor blade in the paper industry adopts this type, that is, it includes the doctor blade (1), and the holding device (p) for holding the doctor blade (I), and the holding device is supported by the frame (a), and the end of the frame The part (2) is fastened to the fixed structure (f) via two fastening points (pf).

[0027] According to the invention, a doctor blade for the paper industry comprises an adjustable fastening mechanism (3) between at least one end (2) of the frame and the fixed structure (f) so that both The distance (d) between fastening points (pf).

[0028] exist Figure 1a with Figure 1b The supports (3), (3') of the scraper in two possible extreme positions of the embodiment are shown respectively in .

[0029] Furthermore, rigidly fastening the mass (5) to the position of the frame (1)...

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Abstract

Doctor blade for the paper industry, comprising a scraping plate (1) and holding means (p) for the scraping plate which in turn are held by a frame (a) the ends of which are securely fastened (2) by two fastening points (pf) to a stationary structure (f), characterized in that it comprises: a) mechanical means for adjustable fastening (3) between at least one end (2) of the frame and the stationary structure (f) in such a way that the distance (d) between the two fastening points (pf) can be varied by the user; and b) means for incorporating an additional mass (5) in adjustable quantities.

Description

technical field [0001] In the paper industry, doctor blades or scrapers are used, where the doctor blades are in contact with the corresponding paper transfer rollers. Background technique [0002] Over time, the need for industrial profitability required a significant increase in the rotational speed of the paper transfer cylinder, but this increase in speed seriously interfered with the performance of the doctor blade. [0003] The applicant has investigated the above-mentioned disturbance and found that its cause is the vibration of the doctor blade itself as the speed of the paper transport roller increases. [0004] The scraper vibrates because its natural frequency coincides with the natural frequency of the paper transfer roller or some dominant rotational harmonic. [0005] With this in mind, if the speed of the paper transfer cylinder increases, the excitation frequency increases, and the applicant therefore deduces that the natural frequency of the doctor blade mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21G3/00
CPCD21G3/005
Inventor 何塞华金·阿莫纳里兹阿斯科雷恩何塞米格尔·埃切埃贝里亚哥伊科谢
Owner 何塞华金・阿莫纳里兹阿斯科雷恩